Closing of view not working as opening

[DomenicoGranito]

I implemented this library in my application. i am using UITabBarController for creating tab bar. when i open modal view controller it open perfectly using slide to up or using tap on mini player.

when i am closing big player slide to bottom not working and when i try to close via button it close but animation not there it close so quickly no animation like we open.

please help me what can be the problem.